It's every musician's worst nightmare: You sit down to perform a Mozart concerto in front of a live audience at a prestigious concert hall, when, all of a sudden, the orchestra starts playing the wrong concerto.

Classical music fans are terribly sophisticated and demanding. They don't like it, for example, when their precious sonic cocoon is pierced by disabled people's medical devices, or by coughing sickies. Now they've nearly torn a man to pieces over his ringing iPhone.

The New York Times sent James Oestreich to review a free Mozart Concert at Avery Fisher Hall a few weeks ago. How was the concert? Don't ask James Oestreich! He spent the bulk of his review complaining about the presence that some selfish jerk with an oxygen tank.